National's new DS90CP04 crosspoint switch allows customers to design LVDS backplane systems for system performance boost while lowering power consumption. Benefits include:

• Versatility: The versatile LVDS I/O takes LVPECL (Low Voltage Positive ECL), CML (Current Mode Logic) or LVDS inputs and provides CML or LVDS outputs
• Size: The switch's small size (6 mm X 6 mm) allows customers to use a small architectural building block and to distribute the array across several devices; therefore, power density is lower and system cooling is easier.
• Speed: The 2.5 Gbps speed allows the new device to be used in a broad variety of applications from OC12 (622 Mbps) to OC48 rates (STM-16)
• Power savings: Power consumption is merely 575 mW typical at 2.5 Gbps, 50 percent less than existing solutions on the marketplace
• Flexibility: The pre-programmed state mode allows the device to be used as a support chip

"National's DS90CP04 crosspoint switch is our answer to the ever increasing demand from customers for a versatile system solution that combines high performance, low power and ease-of-use," said Mark Sauerwald, Network Interface Business Unit product marketing manager, National Semiconductor. "There are many metro and enterprise communications network systems that can use the DS90CP04 as 'glue' logic that provides buffering, redundancy switching or multiplexing."

Data paths of the DS90CP04 are fully differential from input to output for low EMI. The non-blocking architecture allows connections of any input to any output. The device's switch matrix consists of four differential 4:1 multiplexors. Each output channel connects to one of the four inputs common to all multiplexors and is capable of operating at 2.5 Gbps and even at 3.125 Gbps depending on loading and required signal integrity.

National's DS90CP04 excels in the following four primary applications. In the long haul and metro communications area where speeds of 2.5 Gbps are commonly used, the DS90CP04 provides a versatile switch-fabric solution for both simple and complex configurations. In serial digital interfaces used in the broadcast video industry, the new device accommodates data rates for systems that include 270 Megabit per second (Mbps) and 360 Mbps for standard definition and 1.5 Gbps for high-definition television. The DS90CP04 is also ideal for protection switching for Gigabit Ethernet serial streams through a backplane. Another application is in the tributary cards of multi-access controllers used to concentrate several data and voice streams into one high-speed link.

Key features of National's DS90CP04 include:

     -- Broadside pin-out
     -- Ability to expand to larger switch arrays
     -- Tri-state LVDS outputs
     -- Serial control interface with read-back capability
     -- Double register loading and
     -- Single 2.5 V supply

The device's common mode input range is rail to rail and its temperature range is from -40 to +85 degrees Fahrenheit. The DS90CP04 is manufactured on the company's advanced CMOS process technology.

More information about National's industry-leading LVDS solution portfolio is located at: http://lvds.national.com .

Availability, Packaging and Pricing

National's new DS90CP04 4x4 low power 2.5 Gbps digital crosspoint switch is available for immediate shipment. Packaged in a leadless leadframe package (LLP)-32, the device is priced at $12 each in quantities of 1,000.

About National Semiconductor

National Semiconductor is the premier analog company driving the information age. Combining real-world analog and state-of-the-art digital technology, the company is focused on the fast growing markets for wireless handsets; displays; information infrastructure, and information appliances. With headquarters in Santa Clara, California, National reported sales of $1.5 billion for its most recent fiscal year and has about 10,000 employees worldwide. Additional company and product information is available on the World Wide Web at www.national.com.

NOTE: National Semiconductor is a registered trademark of National Semiconductor Corporation. All other brands or product names are trademarks are trademarks or registered trademarks of their respective holders.

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